//------------------------------------------------------------------------------
//  此代码版权（除特别声明或在XREF结尾的命名空间的代码）归作者本人若汝棋茗所有
//  源代码使用协议遵循本仓库的开源协议及附加协议，若本仓库没有设置，则按MIT开源协议授权
//  CSDN博客：https://blog.csdn.net/qq_40374647
//  哔哩哔哩视频：https://space.bilibili.com/94253567
//  Gitee源代码仓库：https://gitee.com/RRQM_Home
//  Github源代码仓库：https://github.com/RRQM
//  API首页：https://touchsocket.net/
//  交流QQ群：234762506
//  感谢您的下载和使用
//------------------------------------------------------------------------------

using System.Collections.Generic;
using System.Threading.Tasks;
using TouchSocket.Core;

namespace TouchSocket.Http;

/// <summary>
/// 默认的Http服务。为Http做兜底拦截。该插件应该最后添加。
/// </summary>
public sealed class DefaultHttpServicePlugin : PluginBase, IHttpPlugin
{
    /// <inheritdoc/>
    public async Task OnHttpRequest(IHttpSessionClient client, HttpContextEventArgs e)
    {
        var response = e.Context.Response;
        if (response.Responsed)
        {
            return;
        }

        if (e.Context.Request.IsMethod("OPTIONS"))
        {
            response.SetStatus(204, "No Content");
            response.Headers.TryAdd("Access-Control-Allow-Origin", "*");
            response.Headers.TryAdd("Access-Control-Allow-Headers", "*");
            response.Headers.TryAdd("Allow", "OPTIONS, GET, POST");
            response.Headers.TryAdd("Access-Control-Allow-Methods", "POST, GET, OPTIONS");

            await response.AnswerAsync().ConfigureAwait(EasyTask.ContinueOnCapturedContext);
        }
        else
        {
            await response.UrlNotFind().AnswerAsync().ConfigureAwait(EasyTask.ContinueOnCapturedContext);
        }
    }
}